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PRODUCTION OF DISSOLVED ORGANIC MATTER FROM DEAD GREEN ALGAL CELLS. II. ANAEROBIC MICROBIAL DECOMPOSITION 1
Author(s) -
Otsuki Akira,
Hanya Takahisa
Publication year - 1972
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1972.17.2.0258
Subject(s) - dissolved organic carbon , organic matter , anaerobic exercise , decomposition , environmental chemistry , nitrogen , chemistry , particulates , carbon fibers , algae , scenedesmus , total organic carbon , botany , biology , organic chemistry , physiology , materials science , composite number , composite material
At the 60th day of anaerobic decomposition of dead cells of Scenedesmus sp. at 20C, the 30% of added algal cell carbon was transformed into dissolved organic carbon and 20% mineralized; 50% remained as particulate matter. On the other hand, 8% of the added algal cell nitrogen was transformed into dissolved organic nitrogen, 48% was mineralized, and 44% remained in particulate form. The dissolved organic compounds consisted mainly of lower fatty acids and yellowish acidic substances. Some proteinaceous material was found. Anaerobic decomposition patterns are compared with those under aerobic conditions and suggest the presence of relatively high concentrations of dissolved organic matter in anaerobic natural environments.